Led by pianist Franco Evangelisti the Gruppo performed as a collective from 65 -71. The focus was to expand both the sonic capabilities of their instruments, but also the sensitivity of each performer within the context of the improvisation. The result(s) remain some of the purist and elevated abstract explorations put to tape retaining both warmth and intelligence. Piano, percussion, double bass, trombone, cello, trumpet, etc are the tools for unparalleled types of aesthetic experiences I was led through and into. This could easily be described as difficult music but only if one remains on the surface of its architecture. An historically necessary must have